Scaffold



March 24. 1925. 1,531,159

' N. TIMMONS S CAFFOLD Filed Nov. 26, 1923 i the following is a specification.

windows from the outside.

Patented Mar. 24, 1 925.

, UNITED STA ES moi: TIMMONS, or nun'rsvrnnn, LABAMA.

'so From).

Application filed November 26, 1923. Serial no. 677,073.

T 0 all whom it may oonoem Be it known, that" I, N101; TIMMoNs,,-a citizen of the United States, residing at Huntsville, inthe eounty of Madison and State of Alabama, ihave invented new and useful Improvements in Scaffolds,"of which Therscafliolding forming the subject matter of the present application for patent has beendesigned more particularly foruse by window cleaners tofacilitate working upon The invention is capableof employment whenever work is required to be done from the outside of a window, whether it be painting, repairing, or the like.

Primarily, the invention contemplates the provision of a novel and improved scaf foldwhich can. be readily put "in place and removed, and whichobviates the necessity of using nails or other fasteners which would mar the window frame or the sill. As a further object, the invention aims to furnish a scafiold of the character *indi cated which will be adjustable to various dimensionsthus rendering it" applicable to windows of different sizes.

A further object of the invention'is the provision of a scaffold of this kind wherein an improved collapsible railing is" provided as a guard against the occupant falling I therefrom.

A stillfurther object of the inventionis to provide a scaffold of'this kind which will be very simple in construction, highly eflicient and convenient in use, and whichmaybe inexpensively manufactured"and The various features of novelty which. characterize my inx e'ntion are pointed out with particularity in the olaiman'nexed to. andforming a part i of this specification.

However, for a better understanding of the invention, and of the advantagespossessed by it, reference should be had to the' 'a'ccompanying drawing and descriptive matter in which I have illustrated and described What I now regard as the preferred embodiment of myinvention.

In the drawing, f 1 Y Figure 1 is a longitudinal sectional view of a scaffold embodying my invention, the same beingshown applied to a window;

Fig. 2 is a cross-section of a window frame, showing a fragment of my scaffold-- ing in plan, and

Fig. 3 is a perspective view of my scaf 1 fold, a portion? of the railing being broken away.

Referring specifically to r the drawing,

wherein likefreference characters have been "used to designate like parts throughout all views, nu1neral 4 denotes a window frame generally, to which-my scaffolding is applied. The scaffold is provided with two extensible. side members having overlapping'rails 5 and 6. Straps 7 extend about the rails'5 and 6 and permit the same to partake of longitudinal movement with respect to each other during the adjustment of the scaffold. Fig. 3 plainly illustrates that screw bolts 8 may be carried by the straps 7 and are provided with winged heads by means of'which the screw bolts may be conveniently turned for tightening or loosening the same. These two extensible frame members embodying the rails 5 and 6 are connected for lateral adjustment by means of two extensible members, one of which comprises rails 10, the inner ends of which car- 'ry metal straps 11 for guiding the sliding movement and further for limiting such movement. This construction is best illusof legs 12, it being evident that these legs 5 will be slidable in the, straps and that they will be held in a predetermined adjusted position by means .of the clamping nuts 1 The purpose of these legs 12'is to support the scaffold, the legs being adapted to rest in Fig. 1.

-Th'e second-means for directing or guidingthe lateral adjustment of the extensible longitudinal frame members embodying the rails 5 and 6 has been referred to incidentally hereinabove, and constitutes extensible rails 16 which carry at their ends metal straps 16 whereby the rails will beheld in. proper position. Each of these rails 16 is connected .near its outer end to the end of one of the members 5, the connection being hadby means of a threaded shank extending through said rail 16 and adapted to receivea clamping nut 17. Other attaching upon the windowledge 15 as clearly shown means may be employed Where expedient, and it will be noted that I. have provided wing nuts for facilitating knocking down of the scaffolding when it is to beshipped or stored. The ends of the extensible members 16 are provided with hooks 18 which are adapted to grip the outer edge of the inside window frame as clearly. shown inF-ig 2, wherein the portion of the windowframe aforementioned is indicated at 19,.-

From the foregoing description read; in;

the application of the scaffolding to a window frame willbe evident. As the first step, the legs 12will be adjusted tQJ'BSt nponthe ledge soas toposition the side members embodying the extensible rails 5 and (Sin horizontal position. The hooked ends of the members 16, will; now be engaged with the portion of the window. frame as at 12.; This construction will form a fairly stablescaf-l fold it the extended portionof'the same is: to support a light weight. .However, I have,

provided a further supporting expedient for I the extended portionof the scaffold, andthe same embodies a pairpof rods 20;which are pivotally carried by blocks 21 wh ch are connection withthe accompanying drawing,

slidable in slots 22 inthe onten-endsof the.

rails 6 as clearly'shown inFig.- 3, theiblocks. i 21 being SGCUIQtlJlll, the: slots by, means. of

wing nuts 2-3. "Thetpurpose of; this slotted connection will become presently; apparent; The other ends of the sun oiitingin'dsfi 1 provided with hooks noted; at; 20*? are adapted to enga ejwith eyes 241 1 -411 rod; 24L which extends vertically iip ward and is provided .with a medial offset 24? for clea-1.'- ing theouter edge. of: the window'ledge -15 asshownin Fig. 1. The connection of the rod;24t withithe outeizsidesj ofa the railsdis, a pivotal connect on.as-indicatedat245. 'Dhe supporting rods 2t; rest; against the-build ing wall 25.whielr'isniadeito'take up the strain of weight upon the scaffold, the mem-' bers 2O acting as props.

It ispropenhereto again emphasize, the, knoelg'dr-nvn; construction. otthe scaffold,

every member of; which canbe readily disassociated from its oowoperatmg. element;

when desired.

The rails 5' and 6 constitute the support: for the flooring or platform 33, the same being held in place by means of; suitable clips or clamps 3st, thespecific character of which is immaterial tothe presentinvention, In

order to render theiscaffold safer-,1 have provided railing therefor, which .emb ocl ies: upright. members 26. wh chare p yotedtog.

the, outer ends. of; the rails iandare in turn pivotallyv connected: at; thelr nppen-endstolong tudinally, disposed horizontal rails 2-8,

the other ends of which are connected as at 29 to upright supports 27' which latter in turn are pivoted at the outer side of the rails 5 as clearly shownin Fig. 3. A horizontal rail-is provided between the members 26 and constitutes extensible portions 30 which are slotted as indicated at 31 to allow for lateral adjustment; of the scaffold frame as hereinbefore referred to." A clamping element 32 serves to hold this member in adjusted position. From the foregoing, it will be apparent-that the railing of the scaffold will be; pivotally secured to the extensible sides thereof and maybefolded down upon the frame; I-Ioweveryin order to maintain the structure in upright position, I have provided sectional braoesdenoted generally at 35. which are pivotally connected to the members 27 and 28 and also intermediate thein ends whereby movement of the railing will be prevented; except when. the hinged j oint ofsaid sectional brace is broken.

- The slotted connection. between the sup: 'porting'members or p-rQpsIQOandTthe railsG is for the purpose of adjusting the props portingr members 20 will'h'ave-to be pulled inwardly towarchthe window sillif While I? have described and illustrated the preferred embodiment of my invention,. as heretofore 1 stated, yet it will I be understood that various :changes and modifications-may be made the-rein without departing from .the i pirit of my. inventionzasdefined by the fol: lowing claim.

Having thus described my invention, what tersPatent. is 1 A: window scaffold; comprising a. pair: of

extensibleside members. adapted: to extend.

the.- inner side, of a window frame, legs adjustably carried; by said; extensible; side members, triangular-braces connected to said extensibleside members and having upstanding members to; flatly Contact With the outersu-rfaceof a=wa1l,;said braces also bepivotal connection with members.

.ing p,ro-vided withinclined members,- having said f upstanding lit-testimony. whereof I a-fliximy signature. ,r, NICK l-,Il\IMON-S-.; 

